A piecewise constant level set method for damage identification of continuum structures based on natural frequencies

被引：9
|
作者：
Zhang, Zhengfang [1 ]
Dai, Xiaoxia [2 ]
Chen, Weifeng [3 ]
机构：
[1] Hangzhou Dianzi Univ, Coll Sci, Hangzhou 310018, Zhejiang, Peoples R China
[2] Zhejiang Univ City Coll, Sch Comp Sci, Hangzhou 310015, Zhejiang, Peoples R China
[3] Zhejiang Univ Finance & Econ, Sch Informat, Hangzhou 310018, Zhejiang, Peoples R China
来源：
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION | 2019年 / 60卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Piecewise constant level set method; Linearized elasticity system; Sensitivity analysis; Restarted conjugate gradient algorithm; Inverse eigenvalue problem; TOPOLOGY OPTIMIZATION; COEFFICIENTS; SHAPE;
D O I：
10.1007/s00158-019-02336-1
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
The damage identification of continuum structures from the observation of its natural frequencies is investigated. The piecewise constant level set (PCLS) method is applied to represent the shape and topology of the damaged region. The functional derivative of the objective function with respect to PCLS function is derived with the application of the continuum sensitivity analysis. A regularized restarted conjugate gradient algorithm is proposed. Identifications of single and multiple damaged regions in 2D cantilever structures are discussed, illustrating the validity of the proposed algorithm.
引用
收藏
页码：2477 / 2491
页数：15
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